info:eu-repo/semantics/article
Astroalign: A Python module for astronomical image registration
Fecha
2020-04Registro en:
Beroiz, Martin Isidro Ramon; Cabral, Juan Bautista; Sánchez, Bruno; Astroalign: A Python module for astronomical image registration; Elsevier; Astronomy and Computing; 32; 100384; 4-2020; 1-8
2213-1337
CONICET Digital
CONICET
Autor
Beroiz, Martin Isidro Ramon
Cabral, Juan Bautista
Sánchez, Bruno
Resumen
We present an algorithm implemented in the Astroalign Python module for image registration in astronomy. Our module does not rely on WCS information and instead matches three-point asterisms (triangles) on the images to find the most accurate linear transformation between them. It is especially useful in the context of aligning images prior to stacking or performing difference image analysis. Astroalign can match images of different point-spread functions, seeing, and atmospheric conditions.